<template>
  <div class="home-category" @mouseleave="categoryId = null">
    <ul class="menu">
      <li v-for="(item) in sidebar" :key="item.id" @mouseenter="categoryId = item.id"
        :class="item.id == categoryId ? 'active' : ''">
        <router-link :to="`/category/${item.id}`">{{ item.name }}</router-link>
        <template v-if="item.children">
          <router-link :to="`/category/${sub.id}`" v-for="(sub) in item.children" :key="sub.id">{{ sub.name }}
          </router-link>
        </template>
        <!-- 骨架屏 -->
        <template v-else>
          <skeleton height="18px" width="60px" bg="rgba(255,255,255,0.2)" style="margin-right:5px" />
          <skeleton height="18px" width="50px" bg="rgba(255,255,255,0.2)" />
        </template>
      </li>
    </ul>
    <!-- 弹层 -->
    <div class="layer">
      <h4>{{ currCategory && currCategory.id === 'brand' ? '品牌' : '分类' }}推荐 <small>根据您的购买或浏览记录推荐</small></h4>
      <!-- 商品 -->
      <ul v-if="currCategory && currCategory.goods">
        <li v-for="item in currCategory.goods" :key="item.id">
          <RouterLink to="/">
            <img v-lazy="item.picture" alt="">
            <div class="info">
              <p class="name ellipsis-2">{{ item.name }}</p>
              <p class="desc ellipsis">{{ item.desc }}</p>
              <p class="price"><i>¥</i>{{ item.price }}</p>
            </div>
          </RouterLink>
        </li>
      </ul>
      <!-- 品牌 -->
      <ul v-if="currCategory && currCategory.brands">
        <li class="brand" v-for="brand in currCategory.brands" :key="brand.id">
          <RouterLink to="/">
            <img v-lazy="brand.picture" alt="">
            <div class="info">
              <p class="place"><i class="iconfont icon-dingwei"></i>{{ brand.place }}</p>
              <p class="name ellipsis">{{ brand.name }}</p>
              <p class="desc ellipsis-2">{{ brand.desc }}</p>
            </div>
          </RouterLink>
        </li>
      </ul>
    </div>
  </div>

</template>

<script setup>
import { reactive, computed, ref } from 'vue';
import { useStore } from 'vuex';
import Home from "@/api/modules/home"
const store = useStore()
const brand = reactive({
  id: "xxxx",
  name: "品牌",
  children: [{ id: "brand-xxx", name: "品牌推荐" }],
  brands: []
})
const getBrands = async () => {
  const { code, result } = await Home.brandList(4)
  if (code == 1) {
    brand.brands = result
  }
}
getBrands()
const sidebar = computed(() => {
  const list = store.state.category.list.map(item => {
    return {
      id: item.id,
      name: item.name,
      children: item.children && item.children.slice(0, 2),
      goods: item.goods
    }
  })
  list.push(brand)
  return list
})
const categoryId = ref(null)
const currCategory = computed(() => {
  return sidebar.value.find(item => item.id === categoryId.value)
})



</script>

<style lang="less" scoped>
.home-category {
  width: 250px;
  height: 500px;
  background: rgba(0, 0, 0, 0.8);
  position: relative;
  z-index: 99;

  .menu {
    li {
      padding-left: 40px;
      height: 50px;
      line-height: 50px;

      &:hover,
      &.active {
        background: @xtxColor;
      }

      a {
        margin-right: 4px;
        color: #fff;

        &:first-child {
          font-size: 16px;
        }
      }
    }
  }

  // 弹出层样式
  .layer {
    width: 990px;
    height: 500px;
    background: rgba(255, 255, 255, 0.8);
    position: absolute;
    left: 250px;
    top: 0;
    display: none;
    padding: 0 15px;

    h4 {
      font-size: 20px;
      font-weight: normal;
      line-height: 80px;

      small {
        font-size: 16px;
        color: #666;
      }
    }

    ul {
      display: flex;
      flex-wrap: wrap;

      li {
        width: 310px;
        height: 120px;
        margin-right: 15px;
        margin-bottom: 15px;
        border: 1px solid #eee;
        border-radius: 4px;
        background: #fff;

        &:nth-child(3n) {
          margin-right: 0;
        }

        a {
          display: flex;
          width: 100%;
          height: 100%;
          align-items: center;
          padding: 10px;

          &:hover {
            background: #e3f9f4;
          }

          img {
            width: 95px;
            height: 95px;
          }

          .info {
            padding-left: 10px;
            line-height: 24px;
            width: 190px;

            .name {
              font-size: 16px;
              color: #666;
            }

            .desc {
              color: #999;
            }

            .price {
              font-size: 22px;
              color: @priceColor;

              i {
                font-size: 16px;
              }
            }
          }
        }
      }

      // 品牌的样式
      li.brand {
        height: 180px;

        a {
          align-items: flex-start;

          img {
            width: 120px;
            height: 160px;
          }

          .info {
            p {
              margin-top: 8px;
            }

            .place {
              color: #999;
            }
          }
        }
      }
    }
  }

  &:hover {
    .layer {
      display: block;
    }
  }
}

// 骨架动画
.xtx-skeleton {
  animation: fade 1s linear infinite alternate;
}

@keyframes fade {
  from {
    opacity: 0.2;
  }

  to {
    opacity: 1;
  }
}
</style>
